BGS mineralogy and petrology collection record

Sample number S71246
Sample Donor Rock,N.M.S.
Rock name 'Original entry: "Lamprophyre", Coarse-Grained, Acicular Variant'
Stratigraphy Not entered
Comments "Lamprophyre", coarse, acicular variant; S. 71242-71246 all from this 4-5 m discordant sheet, dipping gently W, traceable for 1 km
Locality details Upper Kilchattan, Colonsay
50k map sheet Colonsay (35)

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Map reference NR 3707 9577
Year collected Not entered 
Bore name Not applicable
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


S71246

Cross Polarized, S71246

Plane Polarized, S71246

Plane Polarized, S71246